IBM WEBSPHERE 6.1.X - Manual (Page 32)

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W E B S P H E R E P O R T A L V 6 . 1 T U N I N G G U I D E
S O L A R I S
N E T W O R K T U N I N G
For Solaris, use the ndd command to set the following TCP layer parameters. These will
take effect immediately, improving the network layer performance in high-volume
environments. We use the following settings in Portal server running Solaris 10:
How-to-Set: ndd -set /dev/tcp <PARAMETER> <VALUE>
Table 14: Solaris Network Settings
Parameter Value
tcp_time_wait_interval 60000
tcp_keepalive_interval 15000
tcp_fin_wait_2_flush_interval 67500
tcp_conn_req_max_q 16384
tcp_conn_req_max_q0 16384
tcp_xmit_hiwat 400000
tcp_recv_hiwat 400000
tcp_cwnd_max 2097152
tcp_ip_abort_interval 60000
tcp_rexmit_interval_initial 4000
tcp_rexmit_interval_max 10000
tcp_rexmit_interval_min 3000
tcp_max_buf 4194304
K E R N E L T U N I N G
Our Portal Server is running on Solaris 10. In Solaris 10, we use the following ‘projmod’
commands to set system parameters. After making the changes, we must logout then login
to take these changes into effect. To examine your current settings, do ‘cat /etc/project’.
projmod -s -K 'project.max-shm-memory=(privileged,4294967296,deny)' user.root
projmod -s -K 'project.max-shm-ids=(privileged,1024,deny)' user.root
projmod -s -K 'project.max-sem-ids=(privileged,1024,deny)' user.root
projmod -s -K 'process.max-sem-nsems=(privileged,4098,deny)' user.root
projmod -s -K 'process.max-sem-ops=(privileged,16384,deny)' user.root
projmod -s -K 'process.max-file-descriptor=(privileged,16384,deny)' user.root